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The mean free path of electrons in a metal is 4 × 10⁻⁸ m. The electric field which can give on an average 2 eV energy to an electron in the metal will be in a unit of V m⁻¹:

Twenty seven drops of same size are charged at 220 V each. They combine to form a bigger drop. Calculate the potential of the bigger drop:

Dimensional formula for torque is:

Which input (A, B) - output (Y) combination correctly represents the given logic circuit?

Two hollow conducting spheres of radii $R_1$ and $R_2$ ($R_1 \gg R_2$) are concentric and have equal charges. The potential would be:

A monochromatic infrared range finder of power $1 \text{ milliwatt}$ emits photons with wavelength $1000 \text{ nm}$ in $0.1 \text{ second}$. The number of photons emitted in $0.1 \text{ second}$ is: (Given: $h = 6.626 \times 10^{-34} \text{ J s}$, $c = 3 \times 10^8 \text{ m s}^{-1}$, Avogadro number $= 6.022 \times 10^{23}$)

Unit of stress is:

The velocity $v$ (in $\text{cm/sec}$) of a particle is given in terms of time $t$ (in $\text{sec}$) by the relation $v = at + \frac{b}{t+c}$; the dimensions of $a$, $b$ and $c$ are

A wire carrying current $I$ has the shape as shown in the adjoining figure. Linear parts of the wire are very long and parallel to X-axis while the semicircular portion of radius $R$ is lying in the Y-Z plane. The magnetic field at point $O$ is:

In the neutral or faintly alkaline medium, $KMnO_4$ oxidises iodide into iodate. The change in oxidation state of manganese in this reaction is from:

Which does not have the same unit as others?

The coordination number of Ni in $[Ni(C_2O_4)_3]^{4-}$ is:

Dimensions of $CR$ are those of:

Glucose + $x$ Phenyl hydrazine $\rightarrow$ Osazone. '$x$' will be:

In the following circuit, the equivalent capacitance between terminal A and terminal B is:

From the following, identify the correct combination of salient features of the Genetic Code:

The truth table for the given logic circuit is:

Pick the wrong answer in the context with rainbow.

If the dimension of a physical quantity are given by $M^a L^b T^c$, then the physical quantity will be

The surface tension of a liquid is $70\text{ dyne/cm}$. In MKS system its value is